I found this key near an old house site in southeast MA. Key was found about 8-10 inches down. I'm trying to determine how old the key is. Any help is appreciated.View attachment 1156507
Is this the same one in your other thread? If so then it looks to be from the second half of the 1800's, as far as I know most of the very early ones are solid not hollow.
If it is the same one as your other thread I suggest asking a mod to combine both thread to make it less confusing.